I have just started to build a HTPC by using following components:
Gigabyte GA H87N-wifi motherboard
Intel Core i5 4570T CPU 2.9 GHz 35W
Corsair Vengeance Low Profile memory 1600 2X4GB
Streacom FC8 Evo chassi
Streacom OB2 blue ray optical drive
Samsung Pro 840 128 GB SSD
Streacom Nano 150 PSU
Streacom SC30 USB 3.0 internal connector
SATA slimline connector
The position of 24-pin ATX power connector on the motherboard is just parallel to the heatsink on the chassi, right beneath the heatpipe to the right side. The Nano 150 PSU has a circuit with 33 mm in height, so it can be accommodated under the heatpipe, nonetheless, only one heatpipe, the one raises the highest, can be used. Equally, due to Nano 150 PSU circuit cable connections to the Front Panel Header connector on board, the heatpipe to the left side is also restricted, meaning only the one raises to the highest can be used.
All in all, due to the 24-pin ATX power connector on the mainboard, only two heatpipes instead of 4 can be used.
The problem is, when I turned on the power, the indicator first turned on to blue light, after a few seconds, the blue light disappeared. And then after another short period, it came back on again, just to dim off after a while. It so continued, as if the PC were in standby condition.
The Blue ray optical drive, which usually should start to roar once the power is connected, remained completely silent. The CPU was slightly warmed, but I am not sure if it has started properly. There was no signal through the DVI-I to the display. So the Bios setting was not started.
I checked all my cabling, but I could not find any wrong connection. After I googled a while, I found out that there are quite a lot of people out there having the same post-assemble starting problem using Nano PSU or Pico PSU.
I will try to find some equipment to measure the voltages in the Nano PSU circuit and connectors. But having read someone's comment online, I am not sure if this will tell me really where the problems are. Is it a PSU problem, or Bios problem? or Motherboard problem?
I will be very glad if someone can help me out of this. Thanks.